[Raimo5]

I have small, low flow reverse osmosis water filter. I use that to fill up 40 liter bucket and when I'm ready to do final rinse, I just release my pressure washer intake hose from wall tap and put it in a bucket full of RO water. Added benefit is that it also flushes pressure washer internals from dissolved solids. My little RO filter is almost 10 years old and still produces water with EC 0.02ms.